Originally Posted by manic5_2001
I can see the exuast coming from the metle tube where the EGR tube runs. Is this what was causeing my rough Idle and is that tube suppose to be rubber or metal?
EGR should never be commanded at idle so it should not make your idle rough. However, an exhaust leak can affect the exhaust mixture to the oxygen sensor and that can influence the air/fuel ratio.
I would also check to make sure that the plug wires are properly routed and seated on the plugs. They had to have been removed during the header installation.
The EGR tube is steel and the short hoses that tee off of it to the DPFE sensor are silicone rubber.